I am a bit confused, not sure why some options are no longer in ceph_osd.cc (I guess these are inherited somehow then?) but the ticket should remain open,because the "ceph-osd" CLI tool is accepting flags that are not documented.

The end user should not need to be aware where the flags are coming from. But if they are available and they can be used, they should be documented in the output.

Hmm, part of the problem is that these options are generically available as members of config_opts, but they take on particular importance when formatting an OSD. We don't have any defined way of inheriting option descriptions or specifying which ones we want to list -- because we definitely don't want to specify all the many hundreds of them in every help text!So either we need to do it individually in the OSD even though the options aren't specified there, or we need some kind of new framework. Hmm...